Photostability of gold nanoparticles with different shapes: the role of Ag clusters

Autores
Attia, Yasser A.; Buceta, David; Requejo, Felix Gregorio; Giovanetti, Lisandro Jose; López Quintela, M. Arturo
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Anisotropic gold nanostructures prepared by the seed method in the presence of Ag ions have been used to study their photostability to low-power UV irradiation (254 nm) at room temperature. It has been observed that, whereas spheres are very stable to photoirradiation, rods and prisms suffer from photocorrosion and finally dissolve completely with the production of Au(iii) ions. Interpretation of these differences is based on the presence of semiconductor-like Ag clusters, adsorbed onto rods and prisms, able to photocorrode the Au nanoparticles, which are absent in the case of Au spheres. We further show direct evidence of the presence of Ag clusters in Au nanorods by XANES. These results confirm a previous hypothesis (J. Am. Chem. Soc., 2014, 136, 1182-1185) about the major influence of very stable small Ag clusters, not only on the anisotropic formation of nanostructures but also on their photostability.
Fil: Attia, Yasser A.. Universidad de Santiago de Compostela; España. Cairo University; Egipto. Taif University; Arabia Saudita
Fil: Buceta, David. Universidad de Santiago de Compostela; España
Fil: Requejo, Felix Gregorio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Giovanetti, Lisandro Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: López Quintela, M. Arturo. Universidad de Santiago de Compostela; España
Materia
Clusters
Nanoparticles
Xanes
Photostability
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/49011
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Photostability of gold nanoparticles with different shapes: the role of Ag clustersAttia, Yasser A.Buceta, DavidRequejo, Felix GregorioGiovanetti, Lisandro JoseLópez Quintela, M. ArturoClustersNanoparticlesXanesPhotostabilityhttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2Anisotropic gold nanostructures prepared by the seed method in the presence of Ag ions have been used to study their photostability to low-power UV irradiation (254 nm) at room temperature. It has been observed that, whereas spheres are very stable to photoirradiation, rods and prisms suffer from photocorrosion and finally dissolve completely with the production of Au(iii) ions. Interpretation of these differences is based on the presence of semiconductor-like Ag clusters, adsorbed onto rods and prisms, able to photocorrode the Au nanoparticles, which are absent in the case of Au spheres. We further show direct evidence of the presence of Ag clusters in Au nanorods by XANES. These results confirm a previous hypothesis (J. Am. Chem. Soc., 2014, 136, 1182-1185) about the major influence of very stable small Ag clusters, not only on the anisotropic formation of nanostructures but also on their photostability.Fil: Attia, Yasser A.. Universidad de Santiago de Compostela; España. Cairo University; Egipto. Taif University; Arabia SauditaFil: Buceta, David. Universidad de Santiago de Compostela; EspañaFil: Requejo, Felix Gregorio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaFil: Giovanetti, Lisandro Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaFil: López Quintela, M. Arturo. Universidad de Santiago de Compostela; EspañaRoyal Society of Chemistry2015-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/49011Attia, Yasser A.; Buceta, David; Requejo, Felix Gregorio; Giovanetti, Lisandro Jose; López Quintela, M. Arturo; Photostability of gold nanoparticles with different shapes: the role of Ag clusters; Royal Society of Chemistry; Nanoscale; 7; 26; 7-2015; 11273-112792040-33642040-3372CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/content/articlelanding/2015/nr/c5nr01887k#!divAbstractinfo:eu-repo/semantics/altIdentifier/doi/10.1039/C5NR01887Kinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:02:38Zoai:ri.conicet.gov.ar:11336/49011instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:02:39.12CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Photostability of gold nanoparticles with different shapes: the role of Ag clusters
title Photostability of gold nanoparticles with different shapes: the role of Ag clusters
spellingShingle Photostability of gold nanoparticles with different shapes: the role of Ag clusters
Attia, Yasser A.
Clusters
Nanoparticles
Xanes
Photostability
title_short Photostability of gold nanoparticles with different shapes: the role of Ag clusters
title_full Photostability of gold nanoparticles with different shapes: the role of Ag clusters
title_fullStr Photostability of gold nanoparticles with different shapes: the role of Ag clusters
title_full_unstemmed Photostability of gold nanoparticles with different shapes: the role of Ag clusters
title_sort Photostability of gold nanoparticles with different shapes: the role of Ag clusters
dc.creator.none.fl_str_mv Attia, Yasser A.
Buceta, David
Requejo, Felix Gregorio
Giovanetti, Lisandro Jose
López Quintela, M. Arturo
author Attia, Yasser A.
author_facet Attia, Yasser A.
Buceta, David
Requejo, Felix Gregorio
Giovanetti, Lisandro Jose
López Quintela, M. Arturo
author_role author
author2 Buceta, David
Requejo, Felix Gregorio
Giovanetti, Lisandro Jose
López Quintela, M. Arturo
author2_role author
author
author
author
dc.subject.none.fl_str_mv Clusters
Nanoparticles
Xanes
Photostability
topic Clusters
Nanoparticles
Xanes
Photostability
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Anisotropic gold nanostructures prepared by the seed method in the presence of Ag ions have been used to study their photostability to low-power UV irradiation (254 nm) at room temperature. It has been observed that, whereas spheres are very stable to photoirradiation, rods and prisms suffer from photocorrosion and finally dissolve completely with the production of Au(iii) ions. Interpretation of these differences is based on the presence of semiconductor-like Ag clusters, adsorbed onto rods and prisms, able to photocorrode the Au nanoparticles, which are absent in the case of Au spheres. We further show direct evidence of the presence of Ag clusters in Au nanorods by XANES. These results confirm a previous hypothesis (J. Am. Chem. Soc., 2014, 136, 1182-1185) about the major influence of very stable small Ag clusters, not only on the anisotropic formation of nanostructures but also on their photostability.
Fil: Attia, Yasser A.. Universidad de Santiago de Compostela; España. Cairo University; Egipto. Taif University; Arabia Saudita
Fil: Buceta, David. Universidad de Santiago de Compostela; España
Fil: Requejo, Felix Gregorio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Giovanetti, Lisandro Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: López Quintela, M. Arturo. Universidad de Santiago de Compostela; España
description Anisotropic gold nanostructures prepared by the seed method in the presence of Ag ions have been used to study their photostability to low-power UV irradiation (254 nm) at room temperature. It has been observed that, whereas spheres are very stable to photoirradiation, rods and prisms suffer from photocorrosion and finally dissolve completely with the production of Au(iii) ions. Interpretation of these differences is based on the presence of semiconductor-like Ag clusters, adsorbed onto rods and prisms, able to photocorrode the Au nanoparticles, which are absent in the case of Au spheres. We further show direct evidence of the presence of Ag clusters in Au nanorods by XANES. These results confirm a previous hypothesis (J. Am. Chem. Soc., 2014, 136, 1182-1185) about the major influence of very stable small Ag clusters, not only on the anisotropic formation of nanostructures but also on their photostability.
publishDate 2015
dc.date.none.fl_str_mv 2015-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/49011
Attia, Yasser A.; Buceta, David; Requejo, Felix Gregorio; Giovanetti, Lisandro Jose; López Quintela, M. Arturo; Photostability of gold nanoparticles with different shapes: the role of Ag clusters; Royal Society of Chemistry; Nanoscale; 7; 26; 7-2015; 11273-11279
2040-3364
2040-3372
CONICET Digital
CONICET
url http://hdl.handle.net/11336/49011
identifier_str_mv Attia, Yasser A.; Buceta, David; Requejo, Felix Gregorio; Giovanetti, Lisandro Jose; López Quintela, M. Arturo; Photostability of gold nanoparticles with different shapes: the role of Ag clusters; Royal Society of Chemistry; Nanoscale; 7; 26; 7-2015; 11273-11279
2040-3364
2040-3372
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/content/articlelanding/2015/nr/c5nr01887k#!divAbstract
info:eu-repo/semantics/altIdentifier/doi/10.1039/C5NR01887K
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.993085

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